When you first take a look at FAI in Seven Knights ReBIRTH, the thing that immediately jumps out is how dangerous she becomes when you leave her unchecked. She’s a physical damage dealer with a strong focus on burning her enemies down while also carrying a built-in revive that makes her really annoying to kill. She feels like that kind of fighter who refuses to stay down, and if you don’t deal with her properly, she’ll come back even stronger.
Let’s walk through step by step Seven Knights Rebirth FAI Hero Guide, so you understand not just what the skills say, but how they actually play out in a match.
Seven Knights Rebirth FAI Hero Guide – Skills, Passive
Passive – Always Hurting, Always Burning
FAI’s passive does a couple of important things at once. Every enemy on the field is automatically affected by Physical Vulnerability, which means they take extra physical damage across the board. This alone makes her valuable on any team that leans into physical attackers, since she passively boosts the damage output for your squad.
On top of that, she comes with a once-per-battle revive. When she gets knocked out, she comes back with most of her HP restored (and once enhanced, it’s even a full heal). After reviving, she also throws up a barrier based on her attack stat, which gives her some extra breathing room to keep fighting. It’s a nasty combo because it means you can’t just burst her down and forget about her—she’s going to get back up, and often at the perfect moment.
Finally, she gets bonus damage against anyone who’s burning. Since almost her entire kit revolves around inflicting Burn, this ties everything together beautifully.
Basic Attack – Setting Up Burns
Her normal attack is straightforward but sneaky. Against one enemy, it’s a clean physical strike, but when it hits three enemies, it has a chance to inflict Burn. That’s where the damage-over-time playstyle begins. Even her most basic action can set up the rest of her skills to hit harder.
Skill 1 – Firestorm Barrage
Her bottom skill is an area attack that hits everyone twice, each hit carrying a good chance to apply Burn. In real matches, this skill is a consistent way to spread Burn across the field, which not only chips away at health but also sets up her passive bonus damage. Once you upgrade it, the skill even has a chance to apply defense reduction, meaning enemies burn faster and crumble quicker.
It’s not flashy, but it’s the kind of bread-and-butter AoE that makes her a reliable damage dealer in longer fights.
Skill 2 – Ruthless Execution
Her top skill is where things get really dangerous. This is her single-target nuke, but it’s much more than that. It strips buffs first, which means defensive shields and annoying immunity skills won’t save her target. Then it guarantees a Burn, deals a massive chunk of damage, and adds percentage damage based on the enemy’s max HP.
The scary part is the Execution effect. If her target drops below a certain HP threshold (24% by default, but it improves as you enhance and transcend her), she’ll finish them off instantly. At higher levels, this Execution even applies to the entire row, meaning she can wipe multiple enemies in a single strike. That’s the kind of effect that turns matches around.
And since the skill splashes to enemies in the same row with extra damage and a chance to Burn, it’s not just about deleting one enemy—it’s about spreading pain across their lineup.
Enhancements and Transcendence – Power Spikes
When you enhance her skills, the numbers get juicier across the board. Her revive improves to a full heal, her AoE attack gets higher Burn rates and even defense shredding, and her Execution skill’s damage jumps noticeably. The transcendence upgrade is game-changing: Execution becomes easier to trigger (with a higher HP threshold) and extends to a whole row. That’s the point where she transforms from a good damage dealer into a potential team-wiper.
Burn – The Heart of Her Kit
Everything about FAI comes back to Burn. Each Burn tick scales off her attack stat, so the more you build her offensively, the deadlier those burns become. She’s not just about immediate nukes; she’s about overwhelming her enemies with damage-over-time effects while backing it up with Execution as the finishing move. Think of her as a hunter who first weakens her prey with fire, then finishes them when they’re vulnerable.
How to Use FAI in Your Team
FAI fits best in teams that can keep the fight going long enough for Burns to stack up. Pairing her with other physical attackers means her passive damage boost is always paying off. She also loves allies who can control the field or provide sustain, since her revive makes her naturally sticky. The moment she gets back up, she often has enough breathing room to unleash her Execution skill and turn things around.
Against tanky or defensive teams, she shines because her buff removal and percentage HP damage ignore a lot of the protection gimmicks that players rely on. She’s not invincible, but she punishes teams that underestimate her survivability.
